Well-known interviewers choose the people they wish to interview.
"Senator Robert Kennedy of New York, younger brother and closest political associate of the late President Kennedy, carries with him the hopes, the glamour, and the allegiance of the all too brief Kennedy years. He proved himself in high office in partnership with his brother. He is an outspoken critic of the Vietnam war, and an advocate of major social reforms in the cities; and he may well be himself a future President..."
...is why Keith Kyle talks to Robert Kennedy.
(Recording)